How do I display child footer of a repeater if the child repeater is empty?

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C#

ASP.NET

I have two repeaters nested in my application which is working fine. I would love to display the footer if the child repeater is empty. Due to my code my long html, i will just drop a sample of what my html looks like and post my full code for better understanding. Everything works fine though unless when the child repeater is empty i want to display the footer message

What I have tried:

<asp:Repeater ID="ProductRepeater" runat="server" OnItemDataBound="ProductRepeater_ItemDataBound">
        <HeaderTemplate></HeaderTemplate>
        <ItemTemplate>
           <table>
<tr>
<td>
<%#Eval("Name")%>
</td>
<tr>
</table>
<pre> <asp:Repeater ID="ChildRepeater" runat="server">
<HeaderTemplate></HeaderTemplate>
<ItemTemplate>
<table>
<tr>
<td>
<%#Eval("Description")%>
<td>
</tr>
<table>
</itemTemplate>
<pre><FooterTemplate>
                                        <div>
                                            <h5><asp:Label ID="lblDefaultMessage" runat="server" Text="This is empty. " Visible="false" ForeColor="Red" Font-Size="Large">
                                                  </asp:Label>
                                                </h5>
                                                </div>
                                            
                                        </FooterTemplate>

<protected void ProductRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                string category = "Value"
                Repeater rptRelated = e.Item.FindControl("ChildRepeater") as Repeater;
                rptRelated.DataSource = getChild(category);
                rptRelated.DataBind();
                if (rptRelated.Items.Count < 1)
                {
                    if (e.Item.ItemType == ListItemType.Footer)
                    {
                        Label lblDefaultMessage = (Label)e.Item.FindControl("lblDefaultMessage");
                        lblDefaultMessage.Visible = true;

                    } 
                }
                
            }
        }